CR-MicroLabs-Loops-NumbersTrianglesTables/NumberUtilities.java

public class NumberUtilities {
    public static String getRange(int start) {
        StringBuilder builder = new StringBuilder();
        for (int i=0 ; i< start ; i++){
            builder.append(i);
        }
        return "" + builder;
    }  

    public static String getRange(int start, int stop) {
        StringBuilder builder = new StringBuilder();
        for (int i = start ; i < stop ; i ++){
            builder.append(i);
        }

        return "" + builder;
    }

    public static String getRange(int start, int stop, int step) {
        StringBuilder builder = new StringBuilder();
        for (int i = start ; i < stop ; i+=step){
            builder.append(i);
        }

        return "" + builder;
    }

    public static String getEvenNumbers(int start, int stop) {
        StringBuilder builder = new StringBuilder();
        for (int i = start ; i < stop ; i++){
            if (i % 2 == 0) {
            builder.append(i);
        }}

        return "" + builder;
    }

    public static String getOddNumbers(int start, int stop) {
        StringBuilder builder = new StringBuilder();
        for (int i = start ; i < stop ; i++){
            if (i % 2 != 0){
            builder.append(i);
        }}

        return "" + builder;
    }

    public static String getExponentiations(int start, int stop, int exponent) {
        StringBuilder builder = new StringBuilder();
        for (int i = start ; i <= stop ; i++){
            int e = (int)Math.pow(i,exponent);

            builder.append(e);
        }

        return "" + builder;
    }
}